Journal of Colloid and Interface Science最新文献_第10页

Photothermal-assisted photocatalytic peroxydisulfate activation based on core–shell CuBi2O4@Cu2WS4 modulated by interfacial bonding and internal electric field

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-09 DOI: 10.1016/j.jcis.2025.02.054

Xueying Wang , Jun Luo , Qiaozhi Yan , Yu Shen , Zhuo Liu , Shuai Lu , Changyu Lu , Weilong Shi

The photothermal effect, interfacial bond and internal electric field can effectively regulate the charge transfer of the heterojunction, improving the photocatalytic activity of the catalyst. Herein, we prepared the 1D/2D core–shell CuBi₂O₄@Cu₂WS₄ heterojunction with the photothermal effect of “1 + 1 > 2”, which can effectively degrade tetracycline (TC) and levofloxacin (LVF) through the photothermal synergistic peroxydisulfate (PDS) activation process. Density functional theory (DFT) calculation femtosecond transient (fs-TAS) spectral and temperature control experiment analysis showed that the photothermal effect, S-Cu–O bonding and the internal electric field promoted the transport of photogenerated carriers. Visible light irradiation enables a degradation rate of 81.8 % for TC and 67.6 % for LVF in the photothermal-PDS system using Cu₂WS₄/CuBi₂O₄, which is 43.8 % and 26.9 % higher than that at 10℃, respectively. In addition, the vulnerable sites of TC molecules were determined by calculating the Fukui index. The ecological risk of TC degradation products was predicted based on the Ecological Structure Activity Relationships (ECOSAR) model, and the bean sprout cultivation experiment further verified the lower environmental risk of TC degradation products. This study provides a novel and feasible strategy for designing and developing photocatalysts for photothermal synergy PDS advanced oxidation process and organic pollutant degradation.

{"title":"Photothermal-assisted photocatalytic peroxydisulfate activation based on core–shell CuBi2O4@Cu2WS4 modulated by interfacial bonding and internal electric field","authors":"Xueying Wang , Jun Luo , Qiaozhi Yan , Yu Shen , Zhuo Liu , Shuai Lu , Changyu Lu , Weilong Shi","doi":"10.1016/j.jcis.2025.02.054","DOIUrl":"10.1016/j.jcis.2025.02.054","url":null,"abstract":"<div><div>The photothermal effect, interfacial bond and internal electric field can effectively regulate the charge transfer of the heterojunction, improving the photocatalytic activity of the catalyst. Herein, we prepared the 1D/2D core–shell CuBi<sub>2</sub>O<sub>4</sub>@Cu<sub>2</sub>WS<sub>4</sub> heterojunction with the photothermal effect of “1 + 1 > 2”, which can effectively degrade tetracycline (TC) and levofloxacin (LVF) through the photothermal synergistic peroxydisulfate (PDS) activation process. Density functional theory (DFT) calculation femtosecond transient (fs-TAS) spectral and temperature control experiment analysis showed that the photothermal effect, S-Cu–O bonding and the internal electric field promoted the transport of photogenerated carriers. Visible light irradiation enables a degradation rate of 81.8 % for TC and 67.6 % for LVF in the photothermal-PDS system using Cu<sub>2</sub>WS<sub>4</sub>/CuBi<sub>2</sub>O<sub>4</sub>, which is 43.8 % and 26.9 % higher than that at 10℃, respectively. In addition, the vulnerable sites of TC molecules were determined by calculating the Fukui index. The ecological risk of TC degradation products was predicted based on the Ecological Structure Activity Relationships (ECOSAR) model, and the bean sprout cultivation experiment further verified the lower environmental risk of TC degradation products. This study provides a novel and feasible strategy for designing and developing photocatalysts for photothermal synergy PDS advanced oxidation process and organic pollutant degradation.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 105-117"},"PeriodicalIF":9.4,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integrating MXene with carbon dots modified bacteria as hybrid biofilm for photo-assisted microbial fuel cells

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.052

Shujun Qi , Ying Xu , Zeguo Fan , Suping Chen , Shihang Zhang , Lin Zhang , Rong-Bin Song , Zhaohui Li

The development of microbial fuel cells (MFCs) places a high demand on the building of high-performance exoelctrogenic biofilm. In this study, by the electrostatic self-assemble between Ti₃C₂T_x MXene and carbon dots-modified exoelctrogenic bacteria (B@CDs), a MXene-based hybrid biofilm has been developed for MFCs. The modification of positively-charged CDs onto bacterial surface not only builds the bridge between negatively-charged MXene and bacterial cells for the construction of hybrid biofilm, but also endows the photoelectric conversion ability for the realization of multiple energy transfer in hybrid biofilm. Meanwhile, the MXene network paves high-speed pathways for electron transfer during microbial catalytic oxidation and photoelectric conversion processes. As a result, the MFC with this MXene-based hybrid biofilm has achieved a maximum power density of 7518.5 mW/m² in darkness, which increased to 9396.1 mW/m² under light illumination. This work not only offers a good start for the development of MXene-based hybrid biofilm, but also upgrades the performance of photo-assisted microbial fuel cells to a high level for highlighting their application potential as the green and sustainable energy source.

{"title":"Integrating MXene with carbon dots modified bacteria as hybrid biofilm for photo-assisted microbial fuel cells","authors":"Shujun Qi , Ying Xu , Zeguo Fan , Suping Chen , Shihang Zhang , Lin Zhang , Rong-Bin Song , Zhaohui Li","doi":"10.1016/j.jcis.2025.02.052","DOIUrl":"10.1016/j.jcis.2025.02.052","url":null,"abstract":"<div><div>The development of microbial fuel cells (MFCs) places a high demand on the building of high-performance exoelctrogenic biofilm. In this study, by the electrostatic self-assemble between Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene and carbon dots-modified exoelctrogenic bacteria (B@CDs), a MXene-based hybrid biofilm has been developed for MFCs. The modification of positively-charged CDs onto bacterial surface not only builds the bridge between negatively-charged MXene and bacterial cells for the construction of hybrid biofilm, but also endows the photoelectric conversion ability for the realization of multiple energy transfer in hybrid biofilm. Meanwhile, the MXene network paves high-speed pathways for electron transfer during microbial catalytic oxidation and photoelectric conversion processes. As a result, the MFC with this MXene-based hybrid biofilm has achieved a maximum power density of 7518.5 mW/m<sup>2</sup> in darkness, which increased to 9396.1 mW/m<sup>2</sup> under light illumination. This work not only offers a good start for the development of MXene-based hybrid biofilm, but also upgrades the performance of photo-assisted microbial fuel cells to a high level for highlighting their application potential as the green and sustainable energy source.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 65-73"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the cycling stability of nickel-rich oxide cathode materials through a multifunctional CeO2 coating

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.051

Hongbing Ding , Yang Su , Xinlu Wang , Yue Hu , Xin Li , Hongbo Zhang , Guixia Liu , Wensheng Yu , Xiangting Dong , Jinxian Wang , Xin Wang

The main challenges for the commercialization of LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) as a high-energy–density Li-ion metal-oxide cathode material are the inhibition of crystal structure collapse triggered by side reactions at the electrode–electrolyte interface, the release of lattice oxygen, and the formation of microcracks. Herein, a general strategy for synthesizing stable cerium oxide (CeO₂) coatings on the surface of NCM622 material is proposed to overcome the faced challenges. The coating can effectively slow down the rapid decline in capacity after charge/discharge cycles, in which the 1% CeO₂@NCM622 cathode exhibits excellent long-term stability with a capacity retention of 97.43% after 200 cycles at 1C, an increase of 21.35% over the pristine NCM622 cathode. The XPS test shows that the CeO₂ coating has good oxygen storage and release properties, effectively stabilizes the release of lattice oxygen in the layered structure, and suppresses the phase transition caused by lattice relaxation. The coating offers a new idea to further optimize the electrochemical performance of Li-ion nickel-rich (Ni-rich) cathode materials.

{"title":"Enhancing the cycling stability of nickel-rich oxide cathode materials through a multifunctional CeO2 coating","authors":"Hongbing Ding , Yang Su , Xinlu Wang , Yue Hu , Xin Li , Hongbo Zhang , Guixia Liu , Wensheng Yu , Xiangting Dong , Jinxian Wang , Xin Wang","doi":"10.1016/j.jcis.2025.02.051","DOIUrl":"10.1016/j.jcis.2025.02.051","url":null,"abstract":"<div><div>The main challenges for the commercialization of LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> (NCM622) as a high-energy–density Li-ion metal-oxide cathode material are the inhibition of crystal structure collapse triggered by side reactions at the electrode–electrolyte interface, the release of lattice oxygen, and the formation of microcracks. Herein, a general strategy for synthesizing stable cerium oxide (CeO<sub>2</sub>) coatings on the surface of NCM622 material is proposed to overcome the faced challenges. The coating can effectively slow down the rapid decline in capacity after charge/discharge cycles, in which the 1% CeO<sub>2</sub>@NCM622 cathode exhibits excellent long-term stability with a capacity retention of 97.43% after 200 cycles at 1C, an increase of 21.35% over the pristine NCM622 cathode. The XPS test shows that the CeO<sub>2</sub> coating has good oxygen storage and release properties, effectively stabilizes the release of lattice oxygen in the layered structure, and suppresses the phase transition caused by lattice relaxation. The coating offers a new idea to further optimize the electrochemical performance of Li-ion nickel-rich (Ni-rich) cathode materials.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 118-130"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The non-monotonic effect of sucrose on interactions between lipid-bearing surfaces

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.044

Yihui Dong , Yaelle Schilt , Roman Kamyshinsky , Nir Kampf , Qirong Zhu , Di Jin , Sharon Grayer Wolf , Uri Raviv , Jacob Klein

The extremely low sliding friction of articular cartilage in synovial joints has been attributed to phospholipid boundary layers, lubricating via the hydration lubrication mechanism at their exposed, highly hydrated polar-head-groups, in a medium – the synovial fluid – where osmolytes, which may modify the hydration layer, are ubiquitous. Here, using a surface force balance (SFB), we carried out a systematic study to elucidate the effect of sucrose, a known osmotic regulator solute, with concentrations c_sucrose, ranging from 5 to 20 wt%, on the normal and shear forces between interacting phosphatidylcholine (PC) bilayers, both in the gel (1,2-dipalmitoyl-sn-glycero-3-phosphocholine, DPPC) and liquid (1,2-dimyristoyl-sn-glycero-3-phosphocholine, DMPC) phases, supported on atomically-smooth mica substrates. Several additional approaches including cryo-transmission electron microscope, atomic force microscopy, small- and wide-angle X-ray scattering, differential scanning calorimetry, dynamic light scattering and zeta potential measurements are exploited to get additional insight into the nature of the sucrose-dependent interactions. As c_sucrose is varied, a remarkable variation in the friction is observed: a marked reduction in friction is seen at low c_sucrose, but at higher sucrose levels the friction increases, for both gel and liquid phase lipids. This challenges the expectation that hydration lubrication is degraded by osmotic solutes, due to their competing for water of hydration, and reveals for the first time a non-monotonic effect of a sugar on the interactions, particularly frictional forces, between lipid bilayers. This non-monotonic effect correlates with the bilayer potential, and is attributed to a concentration-dependent affinity of the sugar to the PC headgroups.

{"title":"The non-monotonic effect of sucrose on interactions between lipid-bearing surfaces","authors":"Yihui Dong , Yaelle Schilt , Roman Kamyshinsky , Nir Kampf , Qirong Zhu , Di Jin , Sharon Grayer Wolf , Uri Raviv , Jacob Klein","doi":"10.1016/j.jcis.2025.02.044","DOIUrl":"10.1016/j.jcis.2025.02.044","url":null,"abstract":"<div><div>The extremely low sliding friction of articular cartilage in synovial joints has been attributed to phospholipid boundary layers, lubricating via the hydration lubrication mechanism at their exposed, highly hydrated polar-head-groups, in a medium – the synovial fluid – where osmolytes, which may modify the hydration layer, are ubiquitous. Here, using a surface force balance (SFB), we carried out a systematic study to elucidate the effect of sucrose, a known osmotic regulator solute, with concentrations <em>c<sub>sucrose</sub></em>, ranging from 5 to 20 wt%, on the normal and shear forces between interacting phosphatidylcholine (PC) bilayers, both in the gel (1,2-dipalmitoyl-<em>sn</em>-<em>glycero</em>-3-phosphocholine, DPPC) and liquid (1,2-dimyristoyl-<em>sn</em>-<em>glycero</em>-3-phosphocholine, DMPC) phases, supported on atomically-smooth mica substrates. Several additional approaches including cryo-transmission electron microscope, atomic force microscopy, small- and wide-angle X-ray scattering, differential scanning calorimetry, dynamic light scattering and zeta potential measurements are exploited to get additional insight into the nature of the sucrose-dependent interactions. As <em>c<sub>sucrose</sub></em> is varied, a remarkable variation in the friction is observed: a marked <em>reduction</em> in friction is seen at low <em>c<sub>sucrose</sub></em>, but at higher sucrose levels the friction increases, for both gel and liquid phase lipids. This challenges the expectation that hydration lubrication is degraded by osmotic solutes, due to their competing for water of hydration, and reveals for the first time a <em>non-monotonic</em> effect of a sugar on the interactions, particularly frictional forces, between lipid bilayers. This non-monotonic effect correlates with the bilayer potential, and is attributed to a concentration-dependent affinity of the sugar to the PC headgroups.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 217-229"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-supporting highly branched urchin-like NiCoP/NiFeP heterostructures as efficient bifunctional electrocatalyst for overall water splitting

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.048

Jia-Chun Gan, Lu Zhang, Jiu-Ju Feng, Ya-Cheng Shi, Xin-Sheng Li, Ai-Jun Wang

The development of low-cost, efficient, and stable electrocatalysts is urgent in sustainable energy devices. Bifunctional catalysts are particularly crucial because they surmount the kinetics limitations stemming from the sluggish mechanism associated with hydrogen evolution reaction (HER)/oxygen evolution reaction (OER) in water electrolysis. Herein, self-supporting highly branched urchin-like NiCoP/NiFeP heterostructures were in situ grown on Ni foam (NF) through hydrothermal and phosphorization treatments, as examined by a set of characterizations. The role of the compositions played within the material was rigorously investigated to maximize the catalytic properties, coupled by elaborating the catalytic mechanism. The optimized NiCoP/NiFeP/NF exhibited superior performance with the boosted HER activity (overpotential of 43 mV @ 10 mA cm⁻² and 120 mV @ 100 mA cm⁻²) and high OER activity (overpotential of 261 mV @ 50 mA cm⁻² and 299 mV @ 100 mA cm⁻²). Notably, the two-electrode electrolyzer assembled with the NiCoP/NiFeP/NF achieved a cell voltage of 1.705 V at 100 mA cm⁻², integrated by keeping stable operation over 100 h. In all, this research sheds some light on preparation of advanced catalysts in electrocatalysis and energy devices, potentially paving the way for efficient and sustainable energy technologies.

{"title":"Self-supporting highly branched urchin-like NiCoP/NiFeP heterostructures as efficient bifunctional electrocatalyst for overall water splitting","authors":"Jia-Chun Gan, Lu Zhang, Jiu-Ju Feng, Ya-Cheng Shi, Xin-Sheng Li, Ai-Jun Wang","doi":"10.1016/j.jcis.2025.02.048","DOIUrl":"10.1016/j.jcis.2025.02.048","url":null,"abstract":"<div><div>The development of low-cost, efficient, and stable electrocatalysts is urgent in sustainable energy devices. Bifunctional catalysts are particularly crucial because they surmount the kinetics limitations stemming from the sluggish mechanism associated with hydrogen evolution reaction (HER)/oxygen evolution reaction (OER) in water electrolysis. Herein, self-supporting highly branched urchin-like NiCoP/NiFeP heterostructures were in situ grown on Ni foam (NF) through hydrothermal and phosphorization treatments, as examined by a set of characterizations. The role of the compositions played within the material was rigorously investigated to maximize the catalytic properties, coupled by elaborating the catalytic mechanism. The optimized NiCoP/NiFeP/NF exhibited superior performance with the boosted HER activity (overpotential of 43 mV @ 10 mA cm<sup>−2</sup> and 120 mV @ 100 mA cm<sup>−2</sup>) and high OER activity (overpotential of 261 mV @ 50 mA cm<sup>−2</sup> and 299 mV @ 100 mA cm<sup>−2</sup>). Notably, the two-electrode electrolyzer assembled with the NiCoP/NiFeP/NF achieved a cell voltage of 1.705 V at 100 mA cm<sup>−2</sup>, integrated by keeping stable operation over 100 h. In all, this research sheds some light on preparation of advanced catalysts in electrocatalysis and energy devices, potentially paving the way for efficient and sustainable energy technologies.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 24-35"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-entropy oxide nanozyme for T1/T2 dual-mode magnetic resonance imaging guided photothermal-nanocatalytic tumor therapy

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.046

Zhichao Hu , Xue Zhou , Wei Zhang , Bingqiu Liu , Qinghe Han , Jilai Sun , Lu Li , Lingyu Zhang , Chungang Wang

High-entropy oxides (HEOs) have attracted significant attention owing to their broad compositional tunability and high catalytic activity. However, research in this area is still in its early stages, and it is necessary to develop uniform multifunctional high-entropy nanozymes with appropriate sizes and excellent catalytic properties. In this study, we synthesized spherical high-entropy oxide composite carbon (HEO/C) nanoparticles (NPs) with a uniform distribution of particle size. The HEO/C NPs showed efficient peroxidase and catalase activities and photothermal conversion properties in the near-infrared (NIR) biological window. Compared to conventional Fe₃O₄/C NPs, HEO/C NPs exhibited superior NIR-enhanced enzyme-like activities in catalytic applications. Notably, we report, for the first time, that these HEO/C NPs exhibit T₁/T₂ dual-mode magnetic resonance imaging (MRI) capabilities, outperforming the single-mode T₂ MRI performance of Fe₃O₄/C NPs. The combination of enzyme-like catalytic and photothermal properties, along with advanced MRI functionality, underscores the significant potential of HEO/C nanozymes for MRI-guided multimodal tumor therapy. This study opens new avenues for the application of high-entropy nanozymes in biomedicine.

{"title":"High-entropy oxide nanozyme for T1/T2 dual-mode magnetic resonance imaging guided photothermal-nanocatalytic tumor therapy","authors":"Zhichao Hu , Xue Zhou , Wei Zhang , Bingqiu Liu , Qinghe Han , Jilai Sun , Lu Li , Lingyu Zhang , Chungang Wang","doi":"10.1016/j.jcis.2025.02.046","DOIUrl":"10.1016/j.jcis.2025.02.046","url":null,"abstract":"<div><div>High-entropy oxides (HEOs) have attracted significant attention owing to their broad compositional tunability and high catalytic activity. However, research in this area is still in its early stages, and it is necessary to develop uniform multifunctional high-entropy nanozymes with appropriate sizes and excellent catalytic properties. In this study, we synthesized spherical high-entropy oxide composite carbon (HEO/C) nanoparticles (NPs) with a uniform distribution of particle size. The HEO/C NPs showed efficient peroxidase and catalase activities and photothermal conversion properties in the near-infrared (NIR) biological window. Compared to conventional Fe<sub>3</sub>O<sub>4</sub>/C NPs, HEO/C NPs exhibited superior NIR-enhanced enzyme-like activities in catalytic applications. Notably, we report, for the first time, that these HEO/C NPs exhibit T<sub>1</sub>/T<sub>2</sub> dual-mode magnetic resonance imaging (MRI) capabilities, outperforming the single-mode T<sub>2</sub> MRI performance of Fe<sub>3</sub>O<sub>4</sub>/C NPs. The combination of enzyme-like catalytic and photothermal properties, along with advanced MRI functionality, underscores the significant potential of HEO/C nanozymes for MRI-guided multimodal tumor therapy. This study opens new avenues for the application of high-entropy nanozymes in biomedicine.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 325-334"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boosting CO2 photoreduction over perovskite quantum dots decorated with dispersed ruthenium nanoparticles 用分散钌纳米粒子装饰的过氧化物量子点促进二氧化碳光电还原

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.049

Ronggui Yu, Tao Ma, Xinran Huang, Ruyu Lou, Qi Liu, Huitao Fan, Liya Wang, Bo Li

High efficiency CO₂ conversion materials are ideal for solar to carbon fuel conversion. Halide perovskite quantum dots (QDs) are highly desirable as catalysts and have been extensively investigated in the field of CO₂ photoreduction. The major challenge lies in the severe charge recombination and the weak ability to activate CO₂. Herein, we have identified dispersed Ru nanoparticles anchored on CsPbBr₃ (CPB) QDs as prospective photocatalysts for CO₂ reduction at ambient pressure with light irradiation. The optimized 0.45 % CPB@Ru reduced CO₂ to CO at a rate of 28.12 μmol g⁻¹ h⁻¹ without any sacrificial agent and co-catalysts, about 4 times higher than that of the CPB QDs (7.03 μmol g⁻¹ h⁻¹). Experiments and DFT calculations reveal that the as-prepared CPB@Ru showed increased photogenerated charge separation, CO₂ adsorption/activation and lower energy barriers for the formation of *COOH intermediate, which are crucial for enhancing the photocatalytic CO₂ reduction activity. This work provides a convenient pathway for designing high-performance perovskite photocatalysts with high selectivity and high catalytic activity using metal nanoparticle loading technology.

{"title":"Boosting CO2 photoreduction over perovskite quantum dots decorated with dispersed ruthenium nanoparticles","authors":"Ronggui Yu, Tao Ma, Xinran Huang, Ruyu Lou, Qi Liu, Huitao Fan, Liya Wang, Bo Li","doi":"10.1016/j.jcis.2025.02.049","DOIUrl":"10.1016/j.jcis.2025.02.049","url":null,"abstract":"<div><div>High efficiency CO<sub>2</sub> conversion materials are ideal for solar to carbon fuel conversion. Halide perovskite quantum dots (QDs) are highly desirable as catalysts and have been extensively investigated in the field of CO<sub>2</sub> photoreduction. The major challenge lies in the severe charge recombination and the weak ability to activate CO<sub>2</sub>. Herein, we have identified dispersed Ru nanoparticles anchored on CsPbBr<sub>3</sub> (CPB) QDs as prospective photocatalysts for CO<sub>2</sub> reduction at ambient pressure with light irradiation. The optimized 0.45 % CPB@Ru reduced CO<sub>2</sub> to CO at a rate of 28.12 μmol g<sup>−1</sup> h<sup>−1</sup> without any sacrificial agent and co-catalysts, about 4 times higher than that of the CPB QDs (7.03 μmol g<sup>−1</sup> h<sup>−1</sup>). Experiments and DFT calculations reveal that the as-prepared CPB@Ru showed increased photogenerated charge separation, CO<sub>2</sub> adsorption/activation and lower energy barriers for the formation of *COOH intermediate, which are crucial for enhancing the photocatalytic CO<sub>2</sub> reduction activity. This work provides a convenient pathway for designing high-performance perovskite photocatalysts with high selectivity and high catalytic activity using metal nanoparticle loading technology.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 95-104"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enabling enhanced energy efficiency for decoupled water splitting by a hierarchical hybrid redox mediator with exceptional supercapacitive performance

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.050

Hao Chen , Ganxin Yang , Sihang You , Weide Shao , Peng Liu , Fujin Li , Shuguang Chen , Feifei Zhang

The surplus renewable energy can be converted into H₂ fuel through decoupled water splitting without the formation of explosive H₂/O₂ mixtures. The supercapacitor electrode materials effectively function as solid redox mediators in decoupled water splitting; however, their limited supercapacitive performance impedes the efficiency and durability. To address this issue, we have developed a hierarchical Ni/Co hydroxides/chalcogenides hybrid as the electrode material with a high specific capacitance of 1527.60 F g⁻¹ at 2 A g⁻¹ and stability over 10,000 cycles at 10 A g⁻¹. When used as a redox mediator in decoupled water splitting, the NiFe LDH-NiFe alloy hybrid bifunctional electrode achieves low onset voltages of 1.458 V for H₂ evolution and 0.162 V for O₂ evolution at 100 mA cm⁻², with an energy efficiency exceeding 95% over an extended duration of 104.19 h encompassing 640 decoupled cycles. This study highlights the crucial role of depolarization effect from battery-type supercapacitor electrode materials in achieving enhanced energy efficiency for decoupled water splitting.

{"title":"Enabling enhanced energy efficiency for decoupled water splitting by a hierarchical hybrid redox mediator with exceptional supercapacitive performance","authors":"Hao Chen , Ganxin Yang , Sihang You , Weide Shao , Peng Liu , Fujin Li , Shuguang Chen , Feifei Zhang","doi":"10.1016/j.jcis.2025.02.050","DOIUrl":"10.1016/j.jcis.2025.02.050","url":null,"abstract":"<div><div>The surplus renewable energy can be converted into H<sub>2</sub> fuel through decoupled water splitting without the formation of explosive H<sub>2</sub>/O<sub>2</sub> mixtures. The supercapacitor electrode materials effectively function as solid redox mediators in decoupled water splitting; however, their limited supercapacitive performance impedes the efficiency and durability. To address this issue, we have developed a hierarchical Ni/Co hydroxides/chalcogenides hybrid as the electrode material with a high specific capacitance of 1527.60 F g<sup>−1</sup> at 2 A g<sup>−1</sup> and stability over 10,000 cycles at 10 A g<sup>−1</sup>. When used as a redox mediator in decoupled water splitting, the NiFe LDH-NiFe alloy hybrid bifunctional electrode achieves low onset voltages of 1.458 V for H<sub>2</sub> evolution and 0.162 V for O<sub>2</sub> evolution at 100 mA cm<sup>−2</sup>, with an energy efficiency exceeding 95% over an extended duration of 104.19 h encompassing 640 decoupled cycles. This study highlights the crucial role of depolarization effect from battery-type supercapacitor electrode materials in achieving enhanced energy efficiency for decoupled water splitting.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 14-23"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulating band alignment in terrace-like tungsten trioxide via Prussian blue analogues deposition for efficient photoelectrocatalytic water splitting

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.047

Mingyu Xia , Xiaolong Zhao , Yingguang Zhang , Xiaoping Yi , Wending Pan , Dennis Y.C. Leung

Tungsten trioxide (WO₃) suffers from the rapid recombination of photogenerated charge carriers. For practical photoelectrochemical (PEC) water splitting, effective oxygen evolution catalysts need to be introduced to alleviate electron-hole recombination. Prussian blue analogues, with their open framework structures and adjustable metal centers, have emerged as promising candidates for oxygen evolution catalysts. This study investigates the deposition of Cobalt hexacyanoferrate (CFP) nanoparticles with different iron valence states (III and II) on terrace-like WO₃ (TW) photoanodes via a simple sequential dipping method. Notably, CFP(III) has shown to exhibit a stronger influence on photocurrent response than CFP(II). Based on Mott-Schottky studies and density functional theory calculations, CFP(III) facilitates a reduction in the depletion layer width, improves photoinduced hole kinetics, and induces steeper band bending in CFP(III)-TW, thereby enhancing PEC performance. The CFP(III)-TW photoanode achieves a photocurrent density of 1.64 mA cm⁻² at 1.23 V_RHE under visible light, which is 2 times and 5.4 times higher than that of TW and porous WO₃ films, respectively. Photoinduced holes with longer lifetimes suggest CFP(III)-TW experiences less surface recombination and faster separation of charge carriers compared to that of TW and CFP(II)-TW. The scalability of the CFP(III)-TW is demonstrated through the fabrication of a 25 cm² sheet, attaining a current of 4.6 mA at 1.23 V_RHE under visible light illumination. This study highlights the straightforward synthesis of low-cost, environmentally friendly photoanode materials and establishes CFP(III)-TW as a scalable and efficient oxygen evolution catalyst for practical PEC water splitting applications. These findings underscore the potential of CFP(III) as a promising material for advancing renewable energy technologies.

{"title":"Regulating band alignment in terrace-like tungsten trioxide via Prussian blue analogues deposition for efficient photoelectrocatalytic water splitting","authors":"Mingyu Xia , Xiaolong Zhao , Yingguang Zhang , Xiaoping Yi , Wending Pan , Dennis Y.C. Leung","doi":"10.1016/j.jcis.2025.02.047","DOIUrl":"10.1016/j.jcis.2025.02.047","url":null,"abstract":"<div><div>Tungsten trioxide (WO<sub>3</sub>) suffers from the rapid recombination of photogenerated charge carriers. For practical photoelectrochemical (PEC) water splitting, effective oxygen evolution catalysts need to be introduced to alleviate electron-hole recombination. Prussian blue analogues, with their open framework structures and adjustable metal centers, have emerged as promising candidates for oxygen evolution catalysts. This study investigates the deposition of Cobalt hexacyanoferrate (CFP) nanoparticles with different iron valence states (III and II) on terrace-like WO<sub>3</sub> (TW) photoanodes via a simple sequential dipping method. Notably, CFP(III) has shown to exhibit a stronger influence on photocurrent response than CFP(II). Based on Mott-Schottky studies and density functional theory calculations, CFP(III) facilitates a reduction in the depletion layer width, improves photoinduced hole kinetics, and induces steeper band bending in CFP(III)-TW, thereby enhancing PEC performance. The CFP(III)-TW photoanode achieves a photocurrent density of 1.64 mA cm<sup>−2</sup> at 1.23 V<sub>RHE</sub> under visible light, which is 2 times and 5.4 times higher than that of TW and porous WO<sub>3</sub> films, respectively. Photoinduced holes with longer lifetimes suggest CFP(III)-TW experiences less surface recombination and faster separation of charge carriers compared to that of TW and CFP(II)-TW. The scalability of the CFP(III)-TW is demonstrated through the fabrication of a 25 cm<sup>2</sup> sheet, attaining a current of 4.6 mA at 1.23 V<sub>RHE</sub> under visible light illumination. This study highlights the straightforward synthesis of low-cost, environmentally friendly photoanode materials and establishes CFP(III)-TW as a scalable and efficient oxygen evolution catalyst for practical PEC water splitting applications. These findings underscore the potential of CFP(III) as a promising material for advancing renewable energy technologies.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 48-58"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Stable X-ray imaging Enabled by rare earth based double perovskite scintillators

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science

Pub Date : 2025-02-08 DOI: 10.1016/j.jcis.2025.02.053

Jinlong Zhu , Lulu Han , Chao Wang , Luxuan Men , Xuhui Xu , Peng Zhang , Jiawen Xiao

The demand for high-temperature scintillator detectors in petroleum exploration, space exploration and other fields is considerable. However, common high-temperature scintillator detectors based on NaI(Tl) exist many issues such as poor humidity stability and complex processing. In this study, we present Cs₂Na(Er_0.4Yb_0.6)Cl₆ double perovskite as a promising alternative, demonstrating its resistance to thermal quenching within the range of room temperature to 500 K. The double perovskite scintillator shows a light yield of 20,000 photons/MeV at 500 K, because of the cross-relaxation between Yb and Er ions. By mixing Cs₂Na(Er_0.4Yb_0.6)Cl₆ with polydimethylsiloxane (PDMS), we produced a flexible film boasting a resolution of 12 lp/mm. Notably, this film demonstrates better imaging performance under high-temperature conditions compared with that of under room temperature, showcasing its potential for high-temperature imaging applications. Moreover, our findings offer insights into the design of novel scintillators resistant to thermal quenching.

{"title":"Highly Stable X-ray imaging Enabled by rare earth based double perovskite scintillators","authors":"Jinlong Zhu , Lulu Han , Chao Wang , Luxuan Men , Xuhui Xu , Peng Zhang , Jiawen Xiao","doi":"10.1016/j.jcis.2025.02.053","DOIUrl":"10.1016/j.jcis.2025.02.053","url":null,"abstract":"<div><div>The demand for high-temperature scintillator detectors in petroleum exploration, space exploration and other fields is considerable. However, common high-temperature scintillator detectors based on NaI(Tl) exist many issues such as poor humidity stability and complex processing. In this study, we present Cs<sub>2</sub>Na(Er<sub>0.4</sub>Yb<sub>0.6</sub>)Cl<sub>6</sub> double perovskite as a promising alternative, demonstrating its resistance to thermal quenching within the range of room temperature to 500 K. The double perovskite scintillator shows a light yield of 20,000 photons/MeV at 500 K, because of the cross-relaxation between Yb and Er ions. By mixing Cs<sub>2</sub>Na(Er<sub>0.4</sub>Yb<sub>0.6</sub>)Cl<sub>6</sub> with polydimethylsiloxane (PDMS), we produced a flexible film boasting a resolution of 12 lp/mm. Notably, this film demonstrates better imaging performance under high-temperature conditions compared with that of under room temperature, showcasing its potential for high-temperature imaging applications. Moreover, our findings offer insights into the design of novel scintillators resistant to thermal quenching.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"687 ","pages":"Pages 271-278"},"PeriodicalIF":9.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143421417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0